app/views/job_applications/_filter_active.html.erb
<div class="btn-group">
<% button_opts = {
type: 'button',
class: "btn btn-default dropdown-toggle",
data: { toggle: 'dropdown' },
aria: { haspopup: "true", expanded: "false" }
} %>
<%= button_tag button_opts do %>
<b>Active</b> <span class='caret'></span>
<% end %>
<ul class="dropdown-menu">
<li><%= link_to 'All', { unscoped: true } %></li>
<li><%= link_to 'Show active', { active: true } %></li>
<li><%= link_to 'Show inactive', { active: false } %></li>
</ul>
</div>